Improvement in knitting-machines



- 2 Sheets-Sheet 1. W. 817 G; D. MAYO. Knitting-Machine,

Patented April 22, 1879.

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Knitting-Machine. v

No. 214,678. Patented April 22, 1.879.

Fig; ,4.

needles to run in when not in use.

UNITED STATES PATENT CFFIGE.

WILLIAM H. MAYO AND eE'oreE D. MAYO, or sT. JOSEPH, MICHIGAN.

IMPROVEMENT IN KNITTING-MACHINES.

Specification forming part of Letters Patent No. 214,678. dated April22, 1879; application filed November 4, 1878.

will enable others skilled in the art to which,

it appertains to make and use the same, reference being had to theaccompanying drawings, and to the letters of reference marked thereon,which form a part of this specification.

This invention relates to cylinder knittingmachines; and it consists indevices for disposing of a part of the needles when not in use withoutremoving them from the machine, as will be hereinafter more fully setforth.

In the annexed drawings, to which reference is made, and which fullyillustrate the invention, Figure 1 is a plan View of part of a cylinderknitting-machine embodying our invention. Fig. 2 is a side elevation ofthe same. Fig. 3 is a central vertical section of the camcylinder withthe compound slide in position. Fig. 4 is a central vertical section,showing the principal parts of the entire machine. Fig. 5 is a centralvertical section of the cam-cylinder with the double slide removed.Figs. 6 and 7 are detailed views of the compound slide. Fig. 8represents an inclined adjustable block used in the cam-cylinder. Fig. 9shows one of the needles.

A represents the cam-cylinder, provided with the cams B and ledge orprojection 0, upon which latter the needles rest when in mo-' tion. D isthe needle-cylinder, with circumferential groove, in which is placed thespringband a, for holding the needles I I in their places. These partsare constructed substantially in the same manner as in any of thewell-known cylinder knitting-machines.

The object of this invention is to dispose of a part of the needles whennot in use without removing them from the machine; and to this end agroove, 1), is out below the cams and working parts of the machine, onthe inside of the outer or cam cylinder, for the superfluous In order toget the needles into this groove a channel, (I, is cut from the ledge orprojection (3, at an angle of about forty-five degrees, down to thegroove b. To open and close this channel and groove as may be required,a compound slide, F G, is'placed therein, which slide is operated fromthe outside by a thumb-screw, H.

The main part F of the compound slide has a projection or lug, e, whichtits in a horizontal slot, .00, in the cam-cylinder, and the thumbscrewH is screwed therein for holding it in place.

The inner end of the slide F is made inclined, to correspond with thechannel, and over this inside end is placed the part G, which isprovided with an arm, f, fitting in an inclined groove at y in thecam-cylinder. This part G has also' a flange, h, which enters aninclined slot, z, in the inner end of the slide F.

It will readily be seen that when the slide F is moved so as to open thechannel 01, the slide G will move downward to form an inclinedpbstruction or stop in the groove 1). When, however, the slide F ismoved to close the channel d, the slide Gr is moved thereby upward, toleave the groove b unobstructed.

Those needles, I, which are to he removed have an extra projection, m,formed on or attached to the shank.

On top of the machine is placed .a notched disk, J, with its notches atopposite the needles, I, that are to be removed, and the projections a(between the notches) against the needles, I, that are to be retained,thereby pressing these latter needles against the band or spring a inthe groove on the needle-cylinder, allowing the other needles, I, todrop into the channel b.

Directly over the mouth of the channel (I, and high enough above theledge O to allow the natural or not retired needles I to pass, is placedan inclined plane, L, which passes .through the outer cylinder, A, andpresses into a circumferential groove, 0, in the inner or needlecylinder, by means of a spring, 19, and thumb-screw K. I

After the machine is set up with the required number of needles, I,having the projection on say every third ouethe mode of operation is asfollows: To dispose of part of the needles until wanted, place the diskJin the top of the machine, as described then loosen the thumb-screw Hand draw back the slide F,

which will open the channel d, and at the same time the small slide Gwill drop down and close the groove 1) at the rear of the channel d. Thescrew K is then loosened sufficient to let the incline L press into thegroove 0 of. the needle-cylinder. Give the machine one turn to the left,in the direction shown by arrow 1, when the needles, I, having the extraprojection on will come in contact with the incline and run into thechannel. Then move the screw H to the right in the direction shown byarrow 3, closing the channel and opening the groove, which gives theneedles I a free passage around the groove 1).

After the web of the sock is knit and all the needles are required, openthe channel, give the machine one turn to the right, in the directionshown by arrow 2, and the needles will come into position, after whichclose the channel.

Having thus fully described the invention, what is claimed as new, anddesired to be secured by Letters Patent, is

1. The combination of the cam-cylinder A, formed with the ledge 0,having groove 1) underneath the same and channel at through it, asshown, with the compound slide F G, all constructed and arranged tooperate substantially as and for the purposes herein set forth.

2. The combination, with the cam-cylinder A, having ledge C, groove 11,and channel (1, of the compound slide F G, the inclined block L, passingthrough the cylinder and pressed into a groove, 0, on the inner orneedle cylinder, and the spring 19 and thumb-screw K, substantially asand for the purposes herein set forth.

3. The needles I, provided, in addition to the usual shoulder orprojection at the lower end, with the extra projection m, extending aless distance from the body'of the needle, as shown, and for thepurposes set forth.

In testimony that we claim the foregoing as our own we have heretoaffixed our signatures in presence of two witnesses.

WILLIAM H. MAYO. GEORGE D. MAYO.

Witnesses:

H. O. WARD, R. H. MATHEWS.

